星载全球大气波动成像仪研究  

Research on Space-based Global Atmospheric Wave Imager

作　　者：钱浩俊[1,2] 胡雄[1] 涂翠[1,2] 

机构地区：[1]中国科学院空间科学与应用研究中心,北京100190 [2]中国科学院研究生院,北京100049

出　　处：《空间科学学报》2012年第3期362-367,共6页Chinese Journal of Space Science

基　　金：中国科学院创新方向性项目资助(Y02135A38S)

摘　　要：在卫星上对中间层顶区域的气辉辐射成像观测,对于全球大气波动的监测和研究具有重要的意义.利用TDICCD对O_2A(0-0)气辉进行成像观测,计算了曝光积分时间、信噪比和能达到的最高空间分辨率,分析了地球自转对空间分辨率的影响,在此基础上提出一种星载全球大气波动成像仪方案,该方案可以观测垂直波长大于10 km的大气波动,最高水平分辨率可以达到0.33 km.Space-based airglow imaging observation is significant for monitoring global atmospheric waves in the mesopause region.The Time Delay and Integration Charge Coupled Device（TDICCD） is used to capture images of O2A（0-0） airglow.The required exposure time and the signal-to-noise ratio are calculated,and the latitude-dependent space resolutions are analyzed with a modulation transfer function.Due to the Earth＇s rotation,for a circular orbit with a height of 700 km and an incline angle of 73°,the spatial resolution increases with in creasing latitudes,which is 5.7 km near the equator.Based on the above analysis,the instrument＇s block diagram is also given.Results indicate that the space-based airglow imager can observe atmospheric waves with a vertical wavelength of approximately 10 km or longer and with the best horizontal spatial resolution of 0.33 km.

关 键 词：O2A(0-0)气辉 全球大气波动成像仪 中间层顶区域 大气重力波 

分 类 号：P414[天文地球—大气科学及气象学]